doctype html
html
  head
    meta charset="utf-8"
    = wicked_pdf_stylesheet_link_tag "pdf"
    = wicked_pdf_javascript_include_tag "number_pages"
    = wicked_pdf_javascript_include_tag "https://code.jquery.com/jquery-2.2.4.min.js"
  body onload="number_pages()"
    #content
      = yield